Our application has the intermittent (not too often,but can be 10-20 per day) errors like the following:
An error has occurred because a control with id 'grdComplaints$ctl04$ctl00' could not be located or a different control is assigned to the same ID after postback. If the ID is not assigned, explicitly set the ID property of controls that raise postback events to avoid this error.
System.Web.UI.Page.ProcessPostData(NameValueCollection postData, Boolean fBeforeLoad) +877
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
"EnableViewState Property was set to 'False' when i change it to 'True' it becomes functional."
but it didn't eliminate errors.